|
| US4042747 | 14 mars 1975 | 16 août 1977 | Joseph A. Teti, Jr. William C. Teti | Gasket and sealing structures of filled polytetrafluoroethylene resins |
| US4049589 | 30 sept. 1975 | 20 sept. 1977 | Sumitomo Electric Industries, Ltd. | Porous films of polytetrafluoroethylene and process for producing said films |
| US4064214 | 22 sept. 1975 | 20 déc. 1977 | E. I. Du Pont de Nemours and Company | Process for making polytetrafluoroethylene yarn |
| US4202850 | 29 mars 1978 | 13 mai 1980 | Ube Industries, Ltd. | Process for producing fiber-reinforced elastic articles |
| US4439391 | 7 janv. 1981 | 27 mars 1984 | International Paper Company | Polymeric sheets |
| US4510300 | 3 mars 1983 | 9 avr. 1985 | E. I. Du Pont de Nemours and Company | Perfluorocarbon copolymer films |
| US4519969 | 10 sept. 1984 | 28 mai 1985 | Unitika Ltd. | Stretched fluorine type film and method for manufacture thereof |
| US4790090 | 30 avr. 1987 | 13 déc. 1988 | | Fish tag |
| US4832009 | 23 déc. 1987 | 23 mai 1989 | Bio Med Sciences, Inc. | Semi-interpenetrating network polymer backsheet bandage |
| US4876051 | 17 déc. 1987 | 24 oct. 1989 | W. L. Gore & Associates, Inc. | Apparatus and method for extruding and expanding polytetrafluoroethylene tubing and the products produced thereby |
| US4945125 | 5 janv. 1987 | 31 juil. 1990 | Tetratec Corporation | Process of producing a fibrillated semi-interpenetrating polymer network of polytetrafluoroethylene and silicone elastomer and shaped products thereof |
| US5071610 | 10 janv. 1991 | 10 déc. 1991 | Minnesota Mining and Manufacturing Company | Method of making a controlled pore composite polytetrafluoroethylene |
| US5091252 | 25 janv. 1990 | 25 févr. 1992 | ELTECH Systems Corporation | Non-organic/polymer fiber composite and method of making same |
| US5147539 | 28 mai 1991 | 15 sept. 1992 | Minnesota Mining and Manufacturing Company | Controlled pore composite polytetrafluoroethylene article |
| US5192473 | 16 sept. 1991 | 9 mars 1993 | Eltech Systems Corporation | Method of making non-organic/polymer fiber composite |
| US5207915 | 11 juin 1992 | 4 mai 1993 | Minnesota Mining and Manufacturing Company | Separation method using controlled pore composite polytetrafluoroethylene article |
| US5387300 | 30 avr. 1993 | 7 févr. 1995 | | Method of manufacturing a seamless tubular woven article including polytetrafluoroethylene yarn |
| US5518676 | 20 sept. 1994 | 21 mai 1996 | Compagnie Plastic Omnium | Process and extrusion press for making hollow body made of fluoro resin |
| US5788993 | 6 juin 1997 | 4 août 1998 | E. I. du Pont de Nemours and Company | Spinneret with slotted outlet |
| US6117556 | 9 sept. 1997 | 12 sept. 2000 | Daikin Industries Ltd. | Tape for sealing screw joints |
| US6174473 | 27 juil. 1998 | 16 janv. 2001 | E.I. du Pont de Nemours and Company | Paste extrusion method |
| US6214362 | 24 nov. 1999 | 10 avr. 2001 | | Cosmetic pad for removing low tension substances and applying cosmetics |
| US6235377 | 5 sept. 1995 | 22 mai 2001 | Bio Med Sciences, Inc. | Microporous membrane with a stratified pore structure created in situ and process |
| US6447918 | 30 janv. 2001 | 10 sept. 2002 | Xerox Corporation | Interpenetrating polymer network of polytetra fluoroethylene and silicone elastomer for use in electrophotographic fusing applications |
| US6506043 | 13 nov. 2000 | 14 janv. 2003 | E. I. du Pont de Nemours and Company | Paste extrusion apparatus |
| US7922946 | 23 nov. 2005 | 12 avr. 2011 | Donaldson Company, Inc. | PTFE membrane |